Aspirating apparatus.



H. J. SCHMITT. ASPIEATING APPARATUS.

APPLICATION FILED MAR.5, 1912.

1,121,297, PatentedDec. l5.l914.

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ASPIRATING- APPARATUS.

Specification of Letters Patent.

Patented Dec. 15, 1914.

Application filed March 5, 1912. Serial No. 681,768.

To all whom it may concern:

Be it known that I, HENRY J. SoHMrr'r, of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new' and useful Improvements in Aspirating Apparatus, of which the following is a specification.

My invention relates to a new and improved apparatus for cleaning and ventilating rooms, houses, or buildings, etc., and the present invention more particularly relates to an aspirating apparatus of the character shown and described in a pending application for Letters Patent filed by me September 25, 1908, Serial No. 154,802.

The present invention, like my former apparatus, is designed to be connected with a suitable supply of water under pressure and operated thereby, and in thepresent invention, I utilize the water for flushing the apparatus.

The prime object of the present invention is to provide simple and eflicient means for automatically flushing the apparatus or a portion thereof immediately before starting and stopping the same for the purpose of carrying away any dirt or other foreign matter that may accumulate in the apparatus, and particularly in the circulating tube adjacent to the jet nozzle.

The invention consists of certain novel features of construction, and in the assemblage and combination of parts, hereinafter fully described and claimed, and illustrated in preferred form in the accompanying drawings, as herein Figure 1 is a View partly in section and partly in elevation of an apparatus constructed in accordance with my invention with the valve in position to admit water from the fluid supply pipe to the fluid jet nozzle; Figs. 1 and 1 sectional views of the valve device, respectively showing the valveturned to out off communication between the fluid supply pipe and fluid jet nozzle and direct the flow of fluid to the flushing pipe, and in position to shut off the supply of fluid under pressure from the apparatus; Fig. 2, a sectional detail view of the valve and its connections taken on the line IIII of Fig. l with the valve arranged to turn in a horizontal plane and its stem extended through the floor; Fig. 3, a similar view on the line IIIIII of Fig. 1; Fig. 4:, a sectional plan on the line IV-IV of Fig. 3; Fig. 5, a plan view of the indicator and valve operating handle; and Fig. 6, a sectional viewof a modified form of valve device.

In the accompanying drawings I have lllustrated a form of apparatus comprising,

a substantially horizontally disposed circulating tube 1 provided near one end with an upright air inlet pipe 2, and communicating at its opposite end with a discharge pipe 3 provided with a vent pipe 4:. The outer end of tube 1, adjacent pipe 2, is closed by a threaded plu 5 having a central threaded aperture 6 a apted to receive the threaded portion of a fluid jet nozzle 7 and permit it to project within tube 1 slightly beyond the lower end of air inlet pipe 2.

A flushing pipe may be tapped into pipe 2, as shown, or it may communicate directly with tube 1, and communicate at its opposite end 8 with a valve casing 9, which is also in communication with the extension 7 of fluid jet nozzle 7. Valve casing 9 is further provided with a fluid pressure sup ply opening 10 in open communication with a pipe 11, leading to a supply of fluid under pressure, not shown. A valve 12 provided with communicating ports 13 and 14 is fitted to rotate in casing 9, with the port openings so arranged with relation to each other that when the valve is in the position shown in Fig. 1', pipe 11 will be in direct communication with fluid jet nozzle 7, and

when it is in the opposite position shown in Fig. 1 the supply of fluid under pressure will be completely out off from the apparatus and the latter rendered inoperative.

By reference to Fig. 1 it will be seen that vary in construction, for example, it may be 7 of the form shown in Fig. 6, I prefer to use the construction illustrated in Figs. 1 to 4 inclusive, wherein the valve port 14: is made of a sufficient area to afford an open communication between pipes 11 and 8* during the major portion of the rotation of valve 12 from cut-off to operative position and vice versa. In order to prevent a com plete rotation of valve 12, 1t is provided with a .lug or pro ection 12 adapted to travelin a groove 9 formed in theinner face of casing 9 and of just sufflcient length to permit the valve to be turned to its extreme positions.

If desired, the valve may be arranged to rotate in a horizontal plane, as shown in Figs. 2 and 3, in which instance it may be provided with an elongated stem 15, of suflicient length to project through the floor A and permit of the attachment of an operating handle 16. When so arranged, I prefer to provide a circular indicator plate 17 which may be set in the floor and provided with indicating characters corresponding to the relative positions of the valve, as shown in Fig. 5.

In the above described apparatus, when used in connection'with a dust collecting system, pipe 2 is connected by means of a suitable flexible connection to any preferred form of dust collecting device, operated by an indrawn current of air, not shown, and its operation is as follows. Valve 12 1s first turned by means of handle 16 from oil to operative position and during the course of its rotation, water is allowed to flow from pipe 11 through ports 13 and 14 to flushing pipe 8, intoinlet pipe 2 and thence through tube 1 to discharge pipe 3, thus thoroughly flushing the apparatus and removing any dirt which may have accumulated thereln. When the valve has been turned into operativeposition, communication is closed between pipes 11 and 8 and established between pipe 11, through ports 14 and 13 with fluid jet nozzle 7 the stream of water emerging at a high velocity from nozzle 7 into tube 1 will induce a current of air to flow down through pipe 2 carrying with it any dust or dirt which may have been picked up by the collector, which will be carried along through tube 1 and eventually discharge into a sewer or any suitable receptacle, through pipe 3. When valve 12 is again rotated to cut oil the supply of water under pressure to the apparatus, it will be again flushed during the movement of the valve by a reversal of the operation above described.

From the foregoing, it will be noted that I have provided simple and eflicient means for automatically flushing the apparatus immediately before and after ithas been used, thus preventing dirt, etc., from accumulating in the apparatus. v

What I claim is: 1. An apparatus of the character described comprising in combination, a tube provided with an air inlet, a fluid jet nozzle discharging into said tube, a flushing pipe communicating with the tube, means for ply pipe and fluid jet nozzle.

water to the flushing pipe during the movement of the valve to openor close communication with the fluid jet nozzle.

3'. An apparatus of the character described comprising in combination, a tube of uniform diameter provided at one end with a discharge pipe and'a vent, and at its opposite end with an airinlet pipe together with a flushing pipe discharging into'the air inlet pipe, a fluid jet nozzle discharging into the tube adjacent the air inlet, a water pressure supply pipe, and a valve casing connecting said flushing pipe, fluid jet nozzle and sup'ply'pipe and provided with a valve adapted to direct the water to the flushing pipe during its movement to open and close communication, between the sup- 4. An apparatus of the class described comprising a tube, an injector nozzle extending into the tube, a water conduit connected to the injector inlet, a pipe for supplying water to said conduit, a pipe for bypassing the water around the injector nozzle into the tube, and .a single valve in communication with the watersupply pipe and movable in one direction to close communication between the supply pipe and the conduit, and open communication between the supply pipe and the by-pass pipe, and movable in another direction toclose 'communication between the supply pipe and the. bypass and open communication between the supply pipe and'the conduit. i

5. An apparatus of the class described comprising a tube, an air pipe connected to the tube, an injector nozzle extending into the tube, a water conduit connected to the injector nozzle inlet, a pipe for supplying water to said conduit, a pipe for by-passing the water around the injector nozzle inlet into the tube, and a valve between the'water supply pipe and theconduit both the opening and closing movement of which efl'ects communication between the by-p'ass and the supply pipe.

, 6. An apparatus of the class described comprising a tube, an injector nozzle extending into the tube, a water conduit connected to the injector nozzle inlet, a pipe for supplying water to said conduit, a pipe for by-passing the water around the injector nozzle inlet into the tube, a valve be- In testimony whereof I afiix my signatween the water supply pipe and the conture in presence of two witnesses.

duit both the opening and. closing movement of which effects communication be- HENRY SOHMITT' 5 tween the by-pass and the supply pipe, and Witnesses:

an air inlet pipe in communication with the W. G. DooL TTLE, by-pass and the tube. F. E. GAITHER.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0." 

